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GM公司的机车制造集团(GMLG)为适应支线铁路和二级铁路运营的需要,推出一种重新设计的BL20—2改造型内燃机车,该型机车功率为2000马力(1492kW),与原型GP7和GP9型机车比较,带负荷时的燃油消耗将改善18％,且维修间隔超过100天。 GM公司已经制造了3台这种机车的样车。由于改造型机车采用了先进技术,可延长原机车寿命15年以上,从而充分发挥了雇主在原机车上的投资效果。机车所采用的部件,无论是新部件还是加以改造的部件,按照GM公司的要求,均为OEM(原设备制造厂)的标准件。在机车改造过程中,GP7和GP9型机车均
GM’s locomotive manufacturing group (GMLG) introduced a redesigned BL20-2 diesel engine with a power rating of 2,000 horsepower (1492kW) to meet the needs of feeder and secondary railway operations. Compared with prototypes GP7 and Compared with GP9 locomotive, the fuel consumption at load will be improved by 18% and the maintenance interval will exceed 100 days. GM has already produced three prototypes of such locomotives. As the modified locomotive adopts advanced technology, the original locomotive can be extended for more than 15 years, thus fully exerting the employer’s investment effect on the original locomotive. Locomotive components used, either new or modified parts, in accordance with GM’s requirements, are OEM (original equipment manufacturer) standard parts. In the locomotive transformation process, GP7 and GP9 locomotives are